Lock for radiator caps



Patented; May 9., 1922,

2 SHEETSSHE ET I.

S INVENTOR F 1V. Brogwwz, Jr

ATTORNEYS F. N. BROWN, JR.

LOCK FOR RADIATOR CAPS. 7

APPLICATION FILED NOV. 19. 1920.

htented May 9, 1922.

2 SiiEETS-SHEET 2.

' l/Vl/ENTOI? FN Brown, U

WITNESSES A TTORNE Y8 UNITED STATES PATENT OFFICE;

LOCK FOR RADIATOR CAPS.

Specification of Letters Patent.

Patented May 9, 1922.

Application filed November 19, 1920. Serial No. 425,253.

To all whom it may concern:

Be it known that I, FRANCIS NATHANIEL BROWN, Jr., a citizen of the United States, and a resident of El Paso. in the county of El Paso and State of Texas, have invented certain new and useful Improvements in Locks for Radiator Caps, of which the following is a specification.

The present invention relates to looks for radiator caps, and has for its object to provide a device of this character which is of extremely simple and durable construction, reliable in operation and easy and inexpensive to manufacure, which is adapted for use with various standard makes of radiator caps, and which is effective to releasably secure the cap in position on the filling neck of a radiator. whereby to preclude accidental displacement or other removal of the cap from the filling neck except by deliberate manipulation on the part of an authorized person.

Other objects and advantages of the invention reside in certain novel features of construction. combination and arrangement of parts which will be hereinafter more fully described and particularly pointed out in the appended claims, reference being had to the accompanying drawings forming part of this specification, and in which:

Figure 1 is a side elevational view of the invention;

Figure 2 is a plan view thereof;

Figure -3-is a transverse vertical sectional View;

Figure 4 is a transverse horizontal sectional view on line H of Figure 3 Figure 5 is a detail view in section on line 55 of Figure 3:

Figure 6 is an elevational view of a modified form;

Figure 7 is a transverse vertical sectional view thereof; 7

Figure 8 is atransverse horizontal sectional view on line S8 of Figure 7;

Figure 9 is a fragmentary detail view in elevation. illustrating a feature of construc- 'tion of the sleeve; and

Figure 10 is a detail view in transverse vertical section, on line 10-1O of F lgure 8.

Referring to the drawings, it will be seen thatthe invention contemplates a radiator. a portion of which is designated at 10 which embodies as usual a filling neck 11. A cap, designated-generally at 12, is adapted to be associated preferably by means of a threaded connection.

Referring now especially to Figures 1 to 4, the filling neck is provided at its upper end with external threads 13. A sleeve 14 threaded internally and externally is ar ranged on the outer periphery of the upper end of the filling neck with its internal threads engaged with the threads 13 of the filling neck. The cap 12 in this embodiment includes a depending flange l2 provided with internal threads engageable with the external threads of the sleeve 14.

In the embodiment of my invention shown in Figures 6, T. 8 and 9, the filling neck is provided at its upper end with internal threads 15. A sleeve designated generally at 16, is provided with an annular groove '17 therein defining in the sleeve an inner section 18 and an outer section 19. The inner section 18 of the sleeve is threaded internally and externally, the threads of the section lying within the groove being considered as internal threads and the threads lying within the sleeve being considered as the external threads. The internal threads of the sleeve. as clearly shown in Figure 7 are engaged with the threads 15 of the filling neck-and as shown when the sleeve is. threaded on the fillingneck as far as it will go, the top of the filling neck abuts the bottom of the groove 17 and the section 19 extends around the exterior of the upper portion of the filling neck. The cap 12 is provided with a depending flange 12 which extends down into the sleeve 15 and is provided with external threads which are engaged with the external threads of the sleeve, and this cap is further.

provided. with an outer depending flange 12 and which extends down around a portion of the outer section 19 of the sleeve.

In both forms of the invention means is provided for securing the sleeves against displacement or disassociation from the filling neck and includes in both instances malvcap on means are identical lIlCOIlStI'LXCtlOIl a com- "nism of 'ceives a lock casing 23 of cylindrical form leable lips designated at Figure 3, and 21 in Figure 7, which are" carried by and preferably formed of the material of the sleeves and which are bent into and seated in grooves 120 and 21 respectively, formed in the djacent portion of the radiator neck.

Locking means is provided for cooperating with the sleeves to releasably secure the the filling neck and as these locking mon description will serve for.both.. The cap 12 is provided at its periphery with an enlargement 22 adapted to house the mechahe lock. This enlargement re,-

and'suitably secured to the housing. The

lock casing is provided with a cavity which rel is secured against rotation. ing bolt of the sleeves 14 of the embodiment of the secured thereto a rotatable locking bolt 27 which is turned when the barrel is turned and secured against rotation when the bar;

The lock- 27 is adapted to engage a portion invention shown in Figures 1 to 5, inclusive, and to engage a portion of the sleeve 16 in the embodiment of the invention shown in Figures 6 to 9 which portions of the sleeve function as abutments or shoulders for the bolt against which thebolt seats. It will be noted that in Figure 3 the lower face of the sleeve proper constitutes this abutment whereas in Figure 7 thelower face of the section or portion 19 of the sleeve constitutes this abutment. As shown in the drawings, the pivoted bolt operates in the chamber 28 provided therefor in the valve casing which is sufficiently enclosed to prevent access to the'bolt when the device is assembled on the radiator.

In practice it will be seen that the invention is adapted to be organized with radiators, in which the neck is threaded ex- 'ternally or to radiators in which the neck is threaded internally and with caps adapted to cooperate, respectively with either of these types of radiators. The sleeves are so constructed as to fulfill in either event their functions of affording a threading connection for the cap to the neck and of providing an abutment for the locking bolt. It is thus only necessary after the sleeves have been assembled to merely turn the cap home as usual and then to insert a key in the key slot 24 and rotate the barrel thereof in locked position so that the bolt 27 engages and is seated against the abutment provided by the sleeve. To repermit rotation there- ,of. The lower end of the barrel has rigidly and having a housing formed in'its periphery and adapted to receive a lock, a sleeve haying threads engageable with said neck and threads engageable with said cap to connect said cap to said neck, means for securing said sleeve against displacement from sa d neck including malleable lips carried by said sleeve andengageable with said neck, a lock casing arranged in the housing of the cap, a rotatable barrel having a key slot arranged in the casing, and a radial rotatable bolt carried by the lower end of the barrel and engageablewith the sleeve for securing the cap on the filling neck.

2. In a device of the character described, a radiator having a filling neck, a cap adapted for threaded connection with said neck and having a housing formed at its periphery and adapted to receive a lock, a sleeve having threads engageable with said neck and threads engageable with said cap to connect said cap to said neck, a lock cas ing'arranged in the housing of the cap, a rotatable barrel having a. key slot arrangeded for threaded connection with said neck and having a housing formed on its periphery and adapted to receive a lock, a sleeve having threads engageable with said neck and threads engageable with said cap to engage said cap with said neck and having a portion constituting an abutment, and 2 locking mechanism arranged in the housing of the cap and including a bolt engageable with the abutment of the sleeve. 4. In a device of the character described, aradiator having a filling neck, a cap for the filling neck of the radiator, a sleeve providing for connection between the cap and the neck and having a portion constituting an abutment and locking mechanism carried by the cap and including a bolt enigageable with the abutment of the sleeve for releasably securing the cap on the fill-' ing neck.

5. In a device of the character described, a radiator having a filling nck. a cap having a depend-ing flange adapted for threaded connection with the neck and having a housing on its periphery adapted to receive locking mechanism, a sleeve provided with an annular groove adapted-to. receive the upper portion of the filling neck and havlng threads engageable with the filling neck and threads engageable with; the threaded flange ofthe cap, said sleeve having a portion constituting an abutment and locking mechanismincluding a lock casing arranged in the housing of the cap, a rotatable barrel having a key slot therein engaged with the casing and a radial rotatable bolt carried by the lower end of the barrel and engageable with the sleeve for securing the cap on the filling neck.

K FRANCIS NATHANIEL BRGWN, Jr. 

